Improvement in sawing-machines



UNITED STATES PATENT OFFICE.

LUMAN E. HEATrn'oE LANsINe, MICHIGAN.

IMPROVEMENT IN SAWING-MAGHINES.`

Spcciiication forming part of Letters Patent No. 55,099, dated May 29, 1866.

To alt whom it may concern:

Be it known that I, L. F. HEATH, of the town of Lansing, in the State of Michigan, have invented certain new and useful Improvements in Sawing-Machines; and I hereby declare that the following is a true, full, and eX- act description of the same, reference being had to thc accompanying' drawings, and to the letters of reference Inarked thereon.

The nature of my invention consistsl in the use of certain mechanical devices for operating crosscnt and circular' saws.

Figure lin the annexed drawings represents a longitudinal vertical section of my machine. Fig. 2 is a vertical cross-section of the same in the dotted line a a'. of the knuckle or double joint connecting the pitman of the circular saw with the shaft of the balance-wheel.

The frame of my machine consists of the two .uprights A, the sill B, and the cap-piece C.

rIhe uprights are made of two sections connected together in the manner hereinafter described. rlhe lower sections of uprights A are mortised into the ground-sill B, and the upper sections are bound together by the cap-,piece C. E designates the balance-wheel,- and F the shaft on which it is hung. rIhe balance-wheel works between the two uprights A, and the shaft penetrates the uprights, but has its bearings on the friction-rollers g g, and is kept in position at the crank end of said shaft by friction-rollers h h. These rollers are pivoted in the rectangular metal plates J, which are bolted to the lower and upper sections of uprights A. To the crank on the end of the shaft c is attached by means ot' the knuckle, as shown in Fig. 3. The shaft e operates the circular saw.

M represents a cross-bar attached at its center to the lever-beam L, which is hinged at the bottom to the pitman N.l The cross-bar M is made a little convex at top and has a groove eut in it to receive the iron rod o, which is bent downward at its ends. The object of rod o is to operate the lever-beam L. 'Ihe beam L is firmly fastened at top to one of the uprights A, and consequently are both Inoved by the action of the same rod.

s designates a Inetal rod with loops at each Fig. 3 is a plan view The curved spring g conduces to the same purpose.

r represents the pitnIa-n-guide, and consistsv of a bar pivoted to the upright u, which is fastened to beam V. The lower end of bar r is furnished with a curved metal fork, between the tines of which a friction-roller is pivoted, the bottom of the roller resting on the upper surface of the pitman N.

One of the uprights A is pivoted at bottom to the end of beam V. Near the outer end of V is placed a circular saw, which is operated by a band passing over the balance-wheel. Another circular saw, W, can be operated by the crank on the shaft of the balance wheel. The beam Vis kept in position by a rod, I, the lower end of which is hinged to beam V, and the upper end being made to fit in an eye on the inside of the upright A.

Immediately behind the sill B is placed the axle Y, which is secured to the sill B by two staples, and allowed to play freely in the staples. The axle Y is furnished with two wheels, intended to transport the machine to any desirable point when the frame of the machine is raised from the ground by the action of lever c.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. The spring g, constructed and operating in the 'manner and for the purpose herein set forth.

2. The combination of the spring q, the platform P, the rods t, and cross-bar M, the four operatin g a saw in the manner herein described.

' L. F. HEATH.

Witnesses S. D. NEWBRO, E. P. NEWBRO. 

